fix truncation of long module item names
fix truncation of long module item names

test plan:
 - have a module item with a really long name
 - make sure the name appears, truncated with ellipses, in
   chrome, safari, firefox, and ie
   (previously, chrome and safari did not display the
    ellipses, and firefox and ie displayed nothing _but_
    the ellipses)

fixes CNVS-9834

Change-Id: I5c6dea4c5d4f029b1ee90202ed8c4daaefe98460
Reviewed-on: https://gerrit.instructure.com/27070
Reviewed-by: Sterling Cobb <7a57d889ea7f266299434459898a90c7f6a1ca4d@instructure.com>
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
QA-Review: Amber Taniuchi <ef4bfd1e6d278f6bc7d4a478f02be2cb9581a0a5@instructure.com>
Product-Review: Jeremy Stanley <b3f594e10a9edcf5413cf1190121d45078c62290@instructure.com>

instructure/canvas-lms,sdeleon28/canvas-lms,SwinburneOnline/canvas-lms,samuels410/greatlakes-lms,tgroshon/canvas-lms,venturehive/canvas-lms,landonwilkins/canvas-lms,snehakachroo1/LSI_replica,eCNAP/CANVAS,Unow/canvas-lms,wye0220/shindig-canvas,antoniuslin/canvas-lms,eCNAP/CANVAS,whalejasmine/canvas-lms,snehakachroo1/LSI_replica,kyroskoh/canvas-lms,instructure/canvas-lms,redconfetti/canvas-lms,juoni/canvas-lms,kyroskoh/canvas-lms,tgroshon/canvas-lms,jay3126/canvas-lms,narigone/canvas,greyhwndz/canvas-lms,dgynn/canvas-lms,arrivu/arrivu-lms,fronteerio/canvas-lms,skmezanul/canvas-lms,HotChalk/canvas-lms,usmschuck/canvas,venturehive/canvas-lms,instructure/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,shidao-fm/canvas-lms,jay3126/canvas-lms,matematikk-mooc/canvas-lms,grahamb/canvas-lms,antoniuslin/canvas-lms,eCNAP/CANVAS,venturehive/canvas-lms,leftplusrightllc/canvas-lms,sdeleon28/canvas-lms,dgynn/canvas-lms,matematikk-mooc/canvas-lms,HotChalk/canvas-lms,kyroskoh/canvas-lms,Rvor/canvas-lms,landonwilkins/canvas-lms,AndranikMarkosyan/lms,grahamb/canvas-lms,shidao-fm/canvas-lms,efrj/canvas-lms,leftplusrightllc/canvas-lms,wye0220/shindig-canvas,Jyaasa/canvas-lms,SwinburneOnline/canvas-lms,matematikk-mooc/canvas-lms,greyhwndz/canvas-lms,tgroshon/canvas-lms,roxolan/canvas-lms,juoni/canvas-lms,ShreniiNepal/shrenii_lmp,SwinburneOnline/canvas-lms,gbleydon/canvas-lms,greyhwndz/canvas-lms,sfu/canvas-lms,Rvor/canvas-lms,Jyaasa/canvas-lms,usmschuck/canvas,landonwilkins/canvas-lms,dgynn/canvas-lms,roxolan/canvas-lms,efrj/canvas-lms,arrivu/qibla-ecampus,greyhwndz/canvas-lms,juoni/canvas-lms,wrdsb/canvas-lms,ShreniiNepal/shrenii_lmp,jay3126/canvas-lms,eCNAP/CANVAS,usmschuck/canvas,samuels410/greatlakes-lms,utkarshx/canvas-lms,ShreniiNepal/shrenii_lmp,arrivu/arrivu-lms,djbender/canvas-lms,utkarshx/canvas-lms,Jyaasa/canvas-lms,landonwilkins/canvas-lms,arrivu/qibla-ecampus,SwinburneOnline/canvas-lms,utkarshx/canvas-lms,ShreniiNepal/shrenii_lmp,whalejasmine/canvas-lms,HotChalk/canvas-lms,antoniuslin/canvas-lms,arrivu/arrivu-lms,instructure/canvas-lms,sfu/canvas-lms,efrj/canvas-lms,jay3126/canvas-lms,efrj/canvas-lms,wimemx/Canvas,instructure/canvas-lms,kyroskoh/canvas-lms,dgynn/canvas-lms,wye0220/shindig-canvas,shidao-fm/canvas-lms,wimemx/Canvas,gbleydon/canvas-lms,leftplusrightllc/canvas-lms,grahamb/canvas-lms,antoniuslin/canvas-lms,arrivu/hoodemo,narigone/canvas,narigone/canvas,venturehive/canvas-lms,sfu/canvas-lms,AndranikMarkosyan/lms,Unow/canvas-lms,va7map/canvas-lms,wrdsb/canvas-lms,AndranikMarkosyan/lms,va7map/canvas-lms,narigone/canvas,fronteerio/canvas-lms,utkarshx/canvas-lms,skmezanul/canvas-lms,redconfetti/canvas-lms,samuels410/greatlakes-lms,Rvor/canvas-lms,sfu/canvas-lms,redconfetti/canvas-lms,arrivu/qibla-ecampus,sfu/canvas-lms,matematikk-mooc/canvas-lms,arrivu/hoodemo,grahamb/canvas-lms,usmschuck/canvas,gbleydon/canvas-lms,grahamb/canvas-lms,samuels410/greatlakes-lms,sdeleon28/canvas-lms,wrdsb/canvas-lms,sdeleon28/canvas-lms,roxolan/canvas-lms,juoni/canvas-lms,wrdsb/canvas-lms,arrivu/hoodemo,snehakachroo1/LSI_replica,wimemx/Canvas,tgroshon/canvas-lms,Rvor/canvas-lms,leftplusrightllc/canvas-lms,sfu/canvas-lms,skmezanul/canvas-lms,skmezanul/canvas-lms,fronteerio/canvas-lms,whalejasmine/canvas-lms,whalejasmine/canvas-lms,va7map/canvas-lms,redconfetti/canvas-lms,fronteerio/canvas-lms,roxolan/canvas-lms,AndranikMarkosyan/lms,va7map/canvas-lms,djbender/canvas-lms,HotChalk/canvas-lms,snehakachroo1/LSI_replica,Unow/canvas-lms,instructure/canvas-lms,shidao-fm/canvas-lms,Jyaasa/canvas-lms,djbender/canvas-lms